The purpose of this study was to evaluate the effect of the simultaneous application of a chlorhexidine and thymol-containing varnish (Cervitec) and an amine fluoride/stannous fluoride containing toothpaste (Meridol) on Streptococcus mutans counts in saliva and dental plaque of school children 12-14 years of age, during a six-week period. The children were separated into group 1 (Cervitec varnish + fluoride-containing toothpaste), group 2 (Cervitec varnish + Meridol toothpaste), and group 3 (Meridol toothpaste alone). Over the six weeks the greatest improvement in salivary Streptococcus mutans count occurred in group 2. Overall, a statistically significant decrease in total microbiological count, and Streptococcus mutans was found in all three groups.
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